Maple Valley Auto Repair

Diesel Particulate Filters, or DPFs, play a critical role in reducing emissions in modern diesel vehicles. They trap soot and particulate matter from the exhaust before it can exit the tailpipe. But despite their benefits for air quality, DPFs are known for being a common failure point, especially when proper driving habits and maintenance routines aren’t followed. If you drive a diesel truck or car, understanding what causes DPF failure can help you avoid costly repairs and keep your engine running clean and efficiently. How a DPF Works A DPF is designed to capture the tiny soot particles produced during diesel combustion. As these particles build up, the filter performs a process called regeneration. During regeneration, the exhaust system heats up to burn off the collected soot, turning it into ash. This process keeps the filter from clogging and allows exhaust gases to flow freely. Regeneration can happen passively while driving at highway speeds or activ ... read more